DSLR stands for Digital Single Lens Reflex camera. These cameras are preferred over point-and-shoots for astrophotography because of interchangeable lenses and the ability to change many of the settings (exposure, ISO, f ratio). When mounted to a scope these cameras can rival CCD cameras in image quality.

Mirrorless cameras (also known as CSC 'compact system cameras', EVIL 'electronic viewfinder, interchangable lens' & MILC 'mirrorless interchangeable lens camera') share the advantages of DSLRs and can be used in any of the ways a DSLR can for astrophography. For scopes with limited back focus their shorter mount designs can be a significant advantage.

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